Nikon Monarch X 4-16x50 SF - Manual (Page 4)

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(2) Focusing
(1) Look through the eyepiece with your eye positioned about 10cm (4 in) away from the eyepiece lens (Fig. 3-1), and you will see the Nikoplex reticle (Fig. 3-2) or Milliradian Dot
reticle (Fig. 3-3).
(1) Be sure your eye is positioned within proper alignment and proper eye relief otherwise the view will "black out".
(1) Point the objective end of the scope at the sky (Do not point at the sun) or at a plain unpatterned wall.
(1) Loosen the lock ring. (Non-illuminated Reticle model)
(1) Turn the eyepiece adjustment counter-clockwise and then turn it clockwise until the reticle appears sharp.
(1) (Non-illuminated Reticle model)
(1) Finally, without moving the eyepiece adjustment, turn the eyepiece lock ring as Fig. 3-4 to end so that the eyepiece adjustment will be firmly locked.
The lock ring must be firmly tightened to ensure an air-tight seal.
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Fig. 3-2 Fig. 3-3
Nikoplex Reticle Miliradian Dot Reticle
Lock Ring Eyepiece Adjustment Eye Relief Non illuminated Reticle model
Eyepiece Adjustment Eye Relief
Illuminated Reticle model
Fig. 3-1
Fig. 3-4 Lock Ring
Eeypiece Adiustment